102 citations · 556 across the 27 of their papers we have counts for
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math.AT1998★ 28 cited
Fibrations and homotopy colimits of simplicial sheaves
Charles Rezk
We show that homotopy pullbacks of sheaves of simplicial sets over a Grothendieck topology distribute over homotopy colimits; this generalizes a result of Puppe about topological s…
math.AT1998★ 2 cited
A model for the homotopy theory of homotopy theory
Charles Rezk
We describe a category, the objects of which may be viewed as models for homotopy theories. We show that for such models, ``functors between two homotopy theories form a homotopy t…